It happens that our roses begin to weaken and disturbing spots appear on them. This may mean that they were attacked by a disease, which is black spotting. Plants are exposed to it during the weather that prevails, now when it is warm and humid. So it’s worth knowing how to recognize the first symptoms of black spotty and how to fight it.
Black spotting is a fungal disease that attacks rose leaves. It is caused by Diplocarpon Rosae. It is initially manifested by small, brown spots on the leaves, which over time begin to darken and become black. These spots can have an irregular shape and are surrounded by a yellow border.
What’s more, on the surface of the stains we can see small, black points that are fungal spings. Then strongly infected leaves turn yellow and begin to fall prematurely. It is also worth adding that this disease can also attack shoots, leaf tails, flower cups and fruit.
In particular, it develops during warm and moist weather. In addition, mushroom spores move along with water, e.g. during rain or watering. They can also be transferred by insects.
Black spotting can seriously damage ours. It makes the leaves of the plant fall. In addition, when the disease proceeds quickly, the spots also develop on the shoots. The result of the presence of this disease is Limited rose growth, resulting from the disturbance of photosynthesis.
As a result, our roses become weakened. In addition, prematurely Losing the leaves, they release them, which weakens their condition. The disease also reduces the plant’s resistance to freezing.
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To get rid of the problem, which is the black blink of roses, it is worth using a product that is appreciated by experienced gardeners. Mowa o olejku neem. We can prepare effective spraying from it, which will be great with this problem.
It will stop the development of the pathogen and prevent a situation in which the disease would attack the whole bush. It is important that Apply it immediately after noticing the first disturbing symptoms. We can also use it as a preventive measure, especially when we are dealing with rainy and warm weather.
To do this, we only need 1 l slightly warm water, 5 ml of neem oil and a few drops of vascular fluid to facilitate the combination of oil and water. Mix everything thoroughly and pour into a spray bottle. The solution is ready for use. It’s best to use it in the morning or evening.
